Dissociation Dynamics of Highly Charged Molecular Ions of FC(O)SCl

M. GERONÉS; M. F. ERBEN; R. M. ROMANO; C. O. DELLA VÉDOVA

Rio de Janeiro, Brazil

Simposio; International Symposium Scattering, Coincidence and Absorption Studies of Molecules (SCASM); 2006

Instituto de Química, Universidade Federal do Rio de Janeiro, Brazil

The occurrence of highly charged molecular ion in fluorocarbonylsulfenyl chloride, FC(O)SCl is studied using tunable synchrotron radiation and multicoincidence techniques, which include Photoelectron-Photoion Coincidence (PEPICO) and Photoelectron-Photoion-Photoion Coincidence (PEPIPICO) time of flight (TOF) mass spectrometry. Fragmentation patterns of the PEPICO spectra at the excitation energies around the K levels denote the presence of double ionized molecular fragments such as OCS2+, CS2+, and atomic fragments as C2+, O2+, Cl2+, and S2+, which could be originated in the fragmentation process from at least triple charged FC(O)SCl. The analysis of PEPIPICO spectra reveals several double coincidence islands involving double- and mono-charged ions, indicating that triple or even higher ionization processes effectively occur after the excitation. The influence of Coulomb interactions could cause the occurrence of atomizations as main fragmentation channels.